SCALE Code System

https://scale-manual.ornl.gov
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### Navigate to Installation Directory

Source: https://scale-manual.ornl.gov/6.3.3/installing-building.html

Example of target installation directories for linking data.

```text
(C:\SCALE-6.3.0, /Applications/SCALE-6.3.0/Contents/Resources, etc.).
```

--------------------------------

### KENO Start Type 6 Input Example

Source: https://scale-manual.ornl.gov/6.3.3/CSAS-Shift.html

Example input for KENO demonstrating start type 6 configuration with multiple starting points.

```text
=csas6 parm=bonami
Godiva test problem
test-8grp

read composition
   u-234       1 0 0.000491995 300   end
   u-235       1 0 0.0449996 300   end
   u-238       1 0 0.002498 300   end
end composition
read parameter
   htm=no gen=10 npg=15
end parameter

read geometry
   global unit 1
      sphere 1 8.67
      media 1 1 1
      boundary 1
end geometry

read start
   nst=6 ps6=yes psp=yes
   tfx=1.0 tfy=1.0 tfz=1.0 lnu=5
   tfx=2.0 tfy=2.0 tfz=2.0 lnu=20
end start
end data
end
```

--------------------------------

### Define KENO Start Data Input

Source: https://scale-manual.ornl.gov/6.3.3/Keno.html

Example showing the definition of a start data block. Note that only the first block is processed if multiple are provided.

```text
  READ START
     NST=0 XSP=3.0 XSM=-3.0 YSP=1.0 YSM=-1.0 ZSP=2.0 ZSM=-2.0
  END START

  READ START
     NST=6 TFX=2.0 TFY= 3.0 TFZ=0.0  LNU=25
  END START
```

--------------------------------

### Install Dependencies

Source: https://scale-manual.ornl.gov/6.3.3/_sources/ampx/ampx-Installation.rst.txt

Install the required GCC, Qt, and CMake packages.

```bash
sudo port install gcc48
sudo port install qt4-mac
sudo port install cmake
```

--------------------------------

### Fully-specified UOX Input Example

Source: https://scale-manual.ornl.gov/6.3.3/origen/appendix/origen-SLIG.html

An example of a fully-specified UOX input configuration.

```text
name - abb_

enrichment - 0.5, 1.5, 2.0, 3.0, 4.0, 5.0, 6.0
```

--------------------------------

### Correlated Depletion Case Setup

Source: https://scale-manual.ornl.gov/6.3.3/sampler.html

Example of setting up two correlated depletion cases with perturbed data libraries.

```sampler
=sampler

read parameters
  n_samples = 100
  library = "xn252"
  perturb_xs = yes
  perturb_yields = yes
  perturb_decay = yes
end parameters
```

--------------------------------

### Keno-VI 2x2 Pin Cell Model Example

Source: https://scale-manual.ornl.gov/6.3.3/Keno.html

A demonstration of a 2x2 pin cell model setup for starting distribution analysis.

```kenovi
=kenovi
2x2 pin cell model for starting distribution demonstration
read parameters
   cep=ce_v7.1_endf gen=10  npg=5000 nsk=0 htm=no
end parameter

read mixt
   mix=1
      8016 3.91376E-02 92235 8.73674E-04 92238 1.87428E-02
   mix=2
      8016 3.91376E-02 92235 8.73674E-04 92238 1.87428E-02
   mix=31
     40090 2.17623E-02 40091 4.74582E-03 40092 7.25409E-03
     40094 7.35137E-03 40096 1.18434E-03
   mix=32
     40090 2.17623E-02 40091 4.74582E-03 40092 7.25409E-03
     40094 7.35137E-03 40096 1.18434E-03
   mix=41
     1001 4.77898E-02   1002 5.49646E-06  5010 4.75767E-06
     5011 1.91502E-05   8016 2.38396E-02  8017 9.08111E-06
   mix=42
     1001 4.77898E-02   1002 5.49646E-06  5010 4.75767E-06
     5011 1.91502E-05   8016 2.38396E-02  8017 9.08111E-06
end mixt
```

--------------------------------

### Run Configuration and Build

Source: https://scale-manual.ornl.gov/6.3.3/_sources/ampx/ampx-Installation.rst.txt

Commands to generate the build tree, compile, and test the installation.

```bash
./configure ../
```

```bash
make install
```

```bash
ctest
```

--------------------------------

### Typical Installation Paths

Source: https://scale-manual.ornl.gov/6.3.3/_sources/installing-building.rst.txt

Recommended directory paths for SCALE 6.3 data installation by operating system.

```text
c:\SCALE-6.3.0
```

```text
/scale/scale6.3.0
```

```text
/Applications/SCALE-6.3.0.app/Contents/Resources
```

--------------------------------

### Define MCDancoff START data blocks

Source: https://scale-manual.ornl.gov/6.3.3/MCDancoff.html

Examples of defining Dancoff factors using hole and array nesting structures within the START data block.

```text
read start
  nst=0
  dancoff    hole 1    unit=1  reg=1
end start
```

```text
read start
   dancoff  array  1 1 1 1  array  1 17 17 2  unit 10  region 1
end start
```

--------------------------------

### Define Fuel Pin and Guide Tube Units

Source: https://scale-manual.ornl.gov/6.3.3/_sources/NEWT.rst.txt

Examples of defining fuel pin and guide tube units using cylinders, hexprisms, and media assignments.

```NEWT
media 23 1 30 -20                                                                                                                        
    media 13 1 40 -30                                                                                                                        
    media 23 1 50 -40                                                                                                                        
    boundary 50                                                                                                                              
    '4.0%/3.35% pin                                                                                                                          
    unit 6                                                                     % Unit 6 is identical to unit 2 but                             
    cylinder 10 .06                                                            % places mixture 6 in the fuel region                           
    cylinder 20 .38                                                                                                                          
    cylinder 30 .386                                                                                                                         
    cylinder 40 .455                                                                                                                         
    hexprism 50 .6375                                                                                                                        
    media 23 1 10                                                                                                                            
    media 6 1 20 -10                                                                                                                         
    media 23 1 30 -20                                                                                                                        
    media 13 1 40 -30                                                                                                                        
    media 23 1 50 -40                                                                                                                        
    boundary 50                                                                                                                              
    '                                                                                                                                        
    'guide/inst. tube                                                                                                                        
    '                                                                          % Unit 9 is a control rod guide tube,                           
    unit 9                                                                     % consisting of moderator within the tube,                      
    cylinder 10 .550                                                           % which is, in turn, set into a hexagonal                       
    cylinder 20 .620                                                           % region of moderator                                           
    hexprism 30 .6375                                                                                                                        
    media 23 1 10                                                                                                                            
    media 13 1 20 -10                                                                                                                        
    media 23 1 30 -20                                                                                                                        
    boundary 30                                                                                                                              
    '
```

--------------------------------

### Sample Problem 10: 2C8 Bare Write Restart

Source: https://scale-manual.ornl.gov/6.3.3/KenoC.html

Demonstrates writing a restart file for a 2C8 bare unit configuration.

```KENO V.a
=kenova
sample problem 10  case 2c8 bare  write restart
read parameters
  flx=yes fdn=yes far=yes gas=no lib=4  res=5 wrs=94
  app=yes
  htm=no
end parameters
read mixt
  sct=2
  mix=1  ncm=1
    92234 4.82717e-04 92235 4.47971e-02 92236 9.57233e-05 92238 2.65767e-03
end mixt
read geometry
  unit 1
    cylinder 1 1 5.748 5.3825 -5.3825
    cuboid  0 1 6.87 -6.87 6.87 -6.87 6.505 -6.505
end geometry
read array
  nux=2 nuy=2 nuz=2 fill f1 end fill
end array
end data
end
```

--------------------------------

### Define Arbitrary Starting Points with Start Type 6

Source: https://scale-manual.ornl.gov/6.3.3/_sources/Keno.rst.txt

Examples showing how to define specific starting points and neutron counts (LNU) relative to the global coordinate system, with NPG controlling the total neutron population.

```KENO-VI
 ...

  READ PARAMETER
     NPG=100
  END PARAMETER

  read geometry
     global unit 1
        sphere 1  8
        media 1 1 1
        boundary 1
  end geometry

  READ START
     NST=6
     TFX=2.0 TFY= 3.0 TFZ=0.0  LNU=25
     TFX=3.0 TFY=-2.0 TFZ=-6.0 LNU=45
             TFY=5.2  TFZ=1.0  LNU=120
  END START

 end data
 end
```

```KENO-VI
 ...

  READ PARAMETER
     NPG=100
  END PARAMETER

  read geometry
     global unit 1
        sphere 1  8
        media 1 1 1
        boundary 1
  end geometry

  READ START
     NST=6
     TFX=2.0          LNU=25
     TFY=3.0 TFZ=-6.0 LNU=45
  END START

 end data
 end
```

--------------------------------

### Initialize KENO Units

Source: https://scale-manual.ornl.gov/6.3.3/Keno.html

Examples of initializing specific units and the global unit.

```text
UNIT 6
```

```text
GLOBAL UNIT 4
```

--------------------------------

### Create a complete library with neutron data

Source: https://scale-manual.ornl.gov/6.3.3/_sources/origen/origen-module.rst.txt

Example of initializing a library with both decay and neutron data blocks.

```scale
=origen

build_lib("B.f33") {

  nuclide {
    type=NAMED_SET
    list="complete_v6.2"
  }

```

--------------------------------

### ASCII Start Data File Format

Source: https://scale-manual.ornl.gov/6.3.3/Keno.html

Example of an ASCII start data file where each line defines a data set, ending with a termination line where LNU equals 0.

```text
-1.000000000e-01    -2.000000000e+00    -3.300000000e+00           0           0           0         1           1
-3.000000000e-01    -2.400000000e+00    -3.300000000e+00           0           0           0         1          15
-3.000000000e-01    -2.500000000e+00    -3.300000000e+00           0           0           0         1          36
-4.000000000e-01    -2.600000000e+00    -3.300000000e+00           0           0           0         1          37
-4.000000000e-01    -2.700000000e+00    -3.300000000e+00           0           0           0         1          38
-5.000000000e-01    -2.800000000e+00    -3.300000000e+00           0           0           0         1          39
-5.000000000e-01    -2.900000000e+00    -3.300000000e+00           0           0           0         1          40
-5.000000000e-01    -2.900000000e+00    -3.300000000e+00           0           0           0         1           0
```

--------------------------------

### AMPX Input Configuration Example

Source: https://scale-manual.ornl.gov/6.3.3/_sources/ampx/AMPX-Instructions.rst.txt

Example configuration for copying specific material data from a PENDF library to a double-precision TAB1 output file.

```text
in=32 out=34 mat=9237 mode=-1
```

--------------------------------

### KENO-VI Partial Reflector Configuration

Source: https://scale-manual.ornl.gov/6.3.3/Keno.html

Example of a KENO-VI geometry setup with partial reflector coverage.

```KENO-VI
READ GEOM
UNIT 1
SPHERE  1 3.75
CUBOID  2 6P5.0
MEDIA 1 1 1
MEDIA 0 1 2 -1
BOUNDARY  2
GLOBAL UNIT 2
CUBOID  1  55.0  -55.0  25.0  -25.0  15.0  -15.0
CUBOID  2  58.0  -58.0  28.0  -28.0  15.0  -18.0
CUBOID  3  61.0  -61.0  31.0  -31.0  15.0  -21.0
CUBOID  4  64.0  -64.0  34.0  -34.0  15.0  -24.0
CUBOID  5  67.0  -67.0  37.0  -37.0  15.0  -27.0
CUBOID  6  70.24 -70.24 40.24 -40.24 15.0  -30.24
ARRAY 1 1 PLACE 6 3 2 3*0.0
MEDIA 2 2 2 -1
MEDIA 2 3 3 -2
MEDIA 2 4 4 -3
MEDIA 2 5 5 -4
MEDIA 2 6 6 -5
BOUNDARY  6
END GEOM
READ ARRAY  NUX=11 NUY=5 NUZ=3 FILL F1 END FILL  END ARRAY
READ BIAS ID=500 2 6 END BIAS
```

--------------------------------

### Fully-specified MOX Input Example

Source: https://scale-manual.ornl.gov/6.3.3/origen/appendix/origen-SLIG.html

A complete example of a MOX input file configuration for SLIG.

```text
name - mox_abb_

pu content - 4.0, 7.0, 10.0
pu vector - 50.0, 55.0, 60.0, 65.0, 70.0

cool. density - 0.1, 0.3, 0.5, 0.7, 0.9

dancoff1 - 0.4686, 0.3429, 0.2651, 0.2122, 0.1742
dancoff2 - 0.3103, 0.2316, 0.1823, 0.1484, 0.1237

spec. power - 25.0

burnups - 0, 1, 2, 3, 4.5, 6, 7.5, 9,
          10.5, 12, 13.5, 15, 16.5, 18,
          19.5, 21, 24, 27, 30, 33, 36,
          39, 42, 45, 48, 51, 54, 57, 60,
          63, 66, 69, 72

pin_zone - 11, 20, 16, 12

pin_gad - 4

avg_pin_dens. - 10.4
```

--------------------------------

### Launch SCALE Data Installer

Source: https://scale-manual.ornl.gov/6.3.3/_sources/installing-building.rst.txt

Command to manually trigger the SCALE data installer using the Java runtime.

```shell
java -jar scale-6.3-data-setup.jar
```

--------------------------------

### Depletion Case Setup for Sampler

Source: https://scale-manual.ornl.gov/6.3.3/_sources/sampler.rst.txt

Example of defining two depletion cases with specific geometry and material compositions for isotopic response analysis.

```scale
  read case[c1]
    sequence=t-depl  parm=(bonami,addnux=0)
      pincell model
      xn252
      read composition
       uo2         10 0.95 900 92235 3.6 92238 96.4   end
       zirc2       20 1 600   end
       h2o         30 den=0.75 0.9991 540   end
      end composition
      read celldata
        latticecell squarepitch pitch=1.2600 30 fuelr=0.4095 10 cladr=0.4750 20 end
      end celldata
      read depletion
        10
      end depletion
      read burndata
        power=25 burn=1200 nlib=30 end
      end burndata
      read model
      read materials
        mix=10 com="4.5 enriched fuel" end
        mix=20 com="cladding" end
        mix=30 com="water" end
      end materials
      read geom
        global unit 1
          cylinder 10 0.4095
          cylinder 20 0.4750
          cuboid   30 4p0.63
          media 10 1 10
          media 20 1 20 -10
          media 30 1 30 -20
        boundary 30 3 3
      end geom
      read collapse
       150r1 88r2
      end collapse
      read homog
        500 mini 10 20 30 end
      end homog
      read bounds
        all=refl
      end bounds
      end model
    end sequence
  end case

  read case[c2]
    sequence=t-depl  parm=(bonami,addnux=0)
      pincell model
      xn252
      read composition
       uo2         10 0.95 900 92235 3.6 92238 96.4   end
       zirc2       20 1 600   end
       h2o         30 den=0.75 0.9991 540   end
      end composition
      read celldata
        latticecell squarepitch pitch=1.6600 30 fuelr=0.4095 10 cladr=0.4750 20 end
      end celldata
      read depletion
        10
      end depletion
      read burndata
        power=25 burn=1200 nlib=30 end
      end burndata
      read model
      read materials
        mix=10 com="3.6 enriched fuel" end
        mix=20 com="cladding" end
        mix=30 com="water" end
      end materials
      read geom
        global unit 1
          cylinder 10 0.4095
          cylinder 20 0.4750
          cuboid   30 4p0.83
          media 10 1 10
          media 20 1 20 -10
          media 30 1 30 -20
        boundary 30 3 3
      end geom
      read collapse
       150r1 88r2
      end collapse
      read homog
        500 mini 10 20 30 end
      end homog
      read bounds
        all=refl
      end bounds
      end model
    end sequence
  end case
```

--------------------------------

### Define Pin Geometries

Source: https://scale-manual.ornl.gov/6.3.3/_sources/PolarisA.rst.txt

Examples of various pin configurations including standard fuel pins, guide tubes, and pins with explicit mesh or material overrides.

```scale
%standard fuel pin
pin 1 : 0.4096 0.418 0.475
      : FUEL   GAS   CLAD

%empty guide tube
pin E :        0.561 0.602
      :       COOL.1 CLAD.1

%pyrex
pin P : 0.214 0.231 0.241 0.427 0.437 0.484 0.561 0.602
      : GAS   TUBE  GAS   BP.3  GAS   TUBE  COOL  CLAD

%standard fuel pin with explicit material in the outermost region
pin 1 : 0.4096 0.418 0.475
      : FUEL   GAS   CLAD   COOL.6


%standard fuel pin with explicit ring and sector mesh
pin 1 : 0.4096 0.418 0.475
      : FUEL   GAS   CLAD
      : 5      1     1      0   %5 rings in fuel
      : 8      1     1      1   %8 sectors only in fuel


%large central 2x2 water rod in 4x4 assembly
pin W size=2 : 0.8
             : COOL
```

--------------------------------

### Sample COVERX Comparison Input

Source: https://scale-manual.ornl.gov/6.3.3/_sources/ampx/AMPX-Instructions.rst.txt

Example command line input for comparing two COVERX files with specified logical units and precision.

```text
in=1 -2 out=-3 eps=1e-5 all
```

--------------------------------

### Define Fuel Pin or Pincell

Source: https://scale-manual.ornl.gov/6.3.3/PolarisA.html

Various configurations for fuel pins, guide tubes, and pyrex rods, including examples with explicit material assignments and meshing parameters.

```text
%standard fuel pin
pin 1 : 0.4096 0.418 0.475
      : FUEL   GAS   CLAD

%empty guide tube
pin E :        0.561 0.602
      :       COOL.1 CLAD.1

%pyrex
pin P : 0.214 0.231 0.241 0.427 0.437 0.484 0.561 0.602
      : GAS   TUBE  GAS   BP.3  GAS   TUBE  COOL  CLAD

%standard fuel pin with explicit material in the outermost region
pin 1 : 0.4096 0.418 0.475
      : FUEL   GAS   CLAD   COOL.6


%standard fuel pin with explicit ring and sector mesh
pin 1 : 0.4096 0.418 0.475
      : FUEL   GAS   CLAD
      : 5      1     1      0   %5 rings in fuel
      : 8      1     1      1   %8 sectors only in fuel


%large central 2x2 water rod in 4x4 assembly
pin W size=2 : 0.8
             : COOL

%pinmap must show adjacent Ws
pinmap
F F F F
F W W F
F W W F
F F F F
```

--------------------------------

### Run SCALE sample problems

Source: https://scale-manual.ornl.gov/6.3.3/_sources/installing-building.rst.txt

Commands to execute sample problems for verification of the SCALE installation.

```bash
scalerte @samples/samples
```

```bash
scalerte @samples/samples modulename
```

```bash
scalerte @samples/samples problemname
```

```bash
scalerte @samples/samples csas centrm-pwr.inp origen
```

--------------------------------

### Define NEWT Geometry Units

Source: https://scale-manual.ornl.gov/6.3.3/_sources/NEWT.rst.txt

Examples of defining various fuel pin cells, burnable poison rods, and guide tubes using cuboid and cylinder geometry primitives.

```text
boundary 13 30 30                                         % array will be defined in the read array            
                                                              % data block below.                                   
  
    unit 1                                                                                                                        
    cuboid 13 1.43 0.0 1.43 0.0                               % Unit 1 is a nominal fuel pin cell,                 
    cylinder 12 0.53595 origin x=0.715 y=0.715                % placed in a 1.43 by 1.43 cm cuboid with            
    cylinder 11 0.4742 origin x=0.715 y=0.715                 % a 4 by 4 local grid.                               
    media 3 1 13 -12                                                                                                              
    media 2 1 12 -11                                                                                                              
    media 1 1 11                                                                                                                  
    boundary 13 4 4                                                                                                               
  
    '2: BPR location                                                                                                              
    unit 2                                                    % Unit 2 is an annular burnable poison rod,          
    cuboid 13 1.43 0.0 1.43 0.0                               % placed in a 1.43 by 1.43 cm cuboid with a          
    cylinder 14 0.28385 origin x=0.715 y=0.715                % 4 by 4 local grid. Radially, the rod consists      
    cylinder 15 0.30035 origin x=0.715 y=0.715                % of air, steel, poison material, and steel          
    cylinder 16 0.50865 origin x=0.715 y=0.715                                                                                    
    cylinder 17 0.55755 origin x=0.715 y=0.715                                                                                    
    media 3 1 13 -17                                                                                                              
    media 6 1 17 -16                                                                                                              
    media 4 1 16 -15                                                                                                              
    media 6 1 15 -14                                                                                                              
    media 5 1 14                                                                                                                  
    boundary 13 4 4                                                                                                               
                                                                                                                                  
  
    '3: full guide tube cell                                                                                                      
    unit 3                                                    % Unit 3 is a guide tube consisting of a             
    cuboid 13 1.43 0.0 1.43 0.0                               % cylinder of moderator enclosed in a cylinder       
    cylinder 12 0.6934 origin x=0.715 y=0.715                 % of Zircaloy, centered in a 1.43 by 1.43 cm         
    cylinder 11 0.6502 origin x=0.715 y=0.715                 % cuboid with a 4 by 4 local grid.                   
    media 3 1 13 -12                                                                                                              
    media 2 1 12 -11                                                                                                              
    media 3 1 11                                                                                                                  
    boundary 13 4 4                                                                                                               
                                                                                                                                  
  
    '4: right half of a fuel rod cell                                                                                             
    unit 4                                                    % Unit 4 is the right half of a nominal fuel         
    cuboid 13 1.43 0.715 1.43 0.0                             % cell, to be placed on the left boundary of         
    cylinder 12 0.53595 origin x=0.715 y=0.715 chord +x=0.715 % an array. The cylinder is cut with a chord         
    cylinder 11 0.4742 origin x=0.715 y=0.715 chord +x=0.715  % and placed on the left side of a 0.715 by          
    media 3 1 13 -12                                          % 1.43 cm cuboid with a 2 by 4 local grid.           
```

--------------------------------

### Define a Dodecahedral Pitched Array in KENO-VI

Source: https://scale-manual.ornl.gov/6.3.3/Keno.html

This example demonstrates the setup for a dodecahedral array containing fuel spheres within a cylinder, including material definitions and geometry units.

```KENO-VI
=KENOVI
CLOSE PACKED DODECAHEDRAL ARRAY 17 FUEL SPHERES IN A CYLINDER
READ PARAMETERS LNG=20000 LIB=4 END PARAMETERS
READ MIXT SCT=2
MIX=1 NCM=8 92235 1.37751E-03  92238 9.92354E-05  8016 3.32049E-02
       9019 2.95349E-03  1001 6.05028E-02
MIX=2 NCM=14 13027 6.02374E-02
MIX=3 NCM=14 13027 6.02374E-02
END MIXT
READ GEOMETRY
UNIT  1
COM='SINGLE CELL FUEL CAN IN DODECAHDRON'
SPHERE       10   8.0
SPHERE       20   8.5
DODECAHEDRON 30  10.5
MEDIA  1  1  10
MEDIA  2  1  20  -10
MEDIA  0  1  30  -20
BOUNDARY     30
UNIT  2
COM='EMPTY CELL'
DODECAHEDRON 10  10.5
MEDIA  0  1  10
BOUNDARY     10
GLOBAL UNIT 3
COM='9 CLOSE PACKED FUEL SPHERES IN A CYLINDER'
CYLINDER  10  41.0  44.5   0.0
CYLINDER  20  42.0  44.5  -1.0
ARRAY  1  10 PLACE 3 3 1 3*0.0
MEDIA  3  1 20  -10
BOUNDARY 20
END GEOMETRY
READ ARRAY GBL=1 ARA=1 TYP=DODECAHEDRAL NUX=5 NUY=5 NUZ=5
FILL 25*2
     6*2  2*1  3*2  2*1  12*2
     6*2  3*1  2*2  3*1  2*2  3*1  6*2
     6*2  2*1  3*2  2*1  12*2
     25*2 END FILL  END ARRAY
READ PLOT
TTL='DODECAHEDRAL ARRAY, 4 SPHERES - Z LEVEL = 2'
XUL=-43.0  YUL=43.0  ZUL=14.85  XLR=43.0  YLR=-43.0  ZLR=14.85
UAX=1  VDN=-1  NAX=640    END  PLT0
TTL='DODECAHEDRAL ARRAY, 9 SPHERES - Z LEVEL = 3'
XUL=-43.0  YUL=43.0  ZUL=29.70  XLR=43.0  YLR=-43.0  ZLR=29.70
UAX=1  VDN=-1  NAX=640    END  PLT1
END PLOT
END DATA
END
```

--------------------------------

### Configure Response Parameters and Sensitivity

Source: https://scale-manual.ornl.gov/6.3.3/_sources/tsurfer.rst.txt

Examples demonstrating the use of the PARAMETER block to set default formatting and minimum sensitivity criteria for responses.

```none
1)
  read parameter
    use_dcov
    udcov=0.05
    def_min=0.00001
    relative
  end parameter
  read response
    C:\sensitivity\godiva.sdf       ev=1.0 uv=0.005
    C:\sensitivity\zpr.sdf          ev=1.0 uv=0.005
    C:\sensitivity\jezebel.sdf      ev=1.0 uv=0.005
    C:\sensitivity\void_react_1.sdf ev=0.0 uv=3.0   abs msen=0.1
    C:\sensitivity\void_react_2.sdf ev=0.0 uv=3.0   abs msen=0.1
  end response
```

```none
2)
  read parameter
    use_dcov
    udcov=0.05
    def_min=0.1
    absolute
  end parameter
  read response
    C:\sensitivity\godiva.sdf       ev=1.0 uv=0.005 rel msen=0.00001
    C:\sensitivity\zpr.sdf          ev=1.0 uv=0.005 rel msen=0.00001
    C:\sensitivity\jezebel.sdf      ev=1.0 uv=0.005 rel msen=0.00001
    C:\sensitivity\void_react_1.sdf ev=0.0 uv=3.0
    C:\sensitivity\void_react_2.sdf ev=0.0 uv=3.0
  end response
```

--------------------------------

### Continuous feed and removal blending option

Source: https://scale-manual.ornl.gov/6.3.3/_sources/origen/origen-examples.rst.txt

This example shows the setup for an irradiation case, a decay case with element retention, a glass matrix definition, and a final blending case.

```scale
=arp
w17x17
3
1
360
40
1
0.723
fuellib
end

=origen
bounds{
    neutron=[ 1.00E-05 1.00E-02 3.00E-02 5.00E-02 1.00E-01 2.25E-01
              3.25E-01 4.14E-01 8.00E-01 1.00E+00 1.13E+00 1.30E+00
              1.86E+00 3.06E+00 1.07E+01 2.90E+01 1.01E+02 5.83E+02
              3.04E+03 1.50E+04 1.11E+05 4.08E+05 9.07E+05 1.42E+06
              1.83E+06 3.01E+06 6.38E+06 2.00E+07 ]
}
case(irrad){
    title="Fuel Stream 1 Irradiation"
    lib{ file="fuellib" pos=1 }
    time=[ 8I 36 360 ]
    power=[ 10r40 ]
    mat{
        units=GRAMS
        iso=[u234=534 u235=60000 u236=276 u238=939190]
    }
}
case(spent){
    title="Fuel Stream 1 Decay"
    time{
        t=[ 0.1 0.3 1 3 10 30 100 300 360 ] start=0 %enter times from 0
    }
    processing {
        retained=[se=0.998 rb=0.778 sr=0.778 te=0.778 cs=0.778 ba=0.778
                  dy=0.998 u=0.010 np=0.010 pu=0.010 am=0.010 cm=0.010]
    }
}
case(glass){
    title="100 kg glass" time{ t=[ 1 ] start=0 }
    mat{
        units=GRAMS
        iso=[li=2.18e3 b=2.11e3 o=46.4e3 f=0.061e3 na=7.65e3 mg=0.49e3 al=2.18e3
             si=25.4e3 cl=0.049e3 ca=1.08e3 mn=1.83e3 fe=8.61e3 ni=0.70e3
             zr=0.88e3 pb=0.049e3 ]
    }
}
case(blend){
    title="final blended case"  time=[ 1.01 3 10 30 100 ] %continue previous
    mat{
        blend=[ spent=0.1 glass=0.1 ] %blend factors of 0.1 for each
    }
 neutron{ alphan_medium=CASE } %use this case's isotopics
 print{ ele{ total=yes units=[GRAMS] }
        neutron{ summary=yes spectra=yes detailed=yes }
 }
}
end
```

--------------------------------

### Select GCC version

Source: https://scale-manual.ornl.gov/6.3.3/ampx/ampx-Installation.html

List available GCC versions and set the default compiler to the installed version.

```bash
port select --list gcc
```

```bash
sudo port select --set gcc mp-gcc48
```
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